Friday, 2 December 2022

Joyo Roll Boost

Nice, small and has room for tweaking - i just love to do these modern, super cheap china circuits.. Layout is according to fsb-trace by CheapPedaCollector - who does amazing job with pedals like this one.


 


 

6 comments:

  1. Hi,
    The best transistor BC549 is type A, B or C?
    Thanks

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    Replies
    1. The gain range was not specified with the trace. For the real current gain you'll getting out of this little circuit, i really don't think it's all that important. However, i recall seein a few joyos having the basic BC549C for BJTs.

      Either way. You'll be fine with any silion NPN, just note the pinout.
      +m

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    2. Verified.
      This boost sounds very similar to a standard LPB-2: dirty, and with low headroom. This one would be an OK alternative for single coils, but for humbuckers, an LPB-2 with the gain pot moved up front would be a better choice.

      Delete
  2. can i request this? , https://schematicsonline.com/schematic/joyo-california-sound/

    ReplyDelete